Recombinant human TGF-β2 is a 27.08 kDa protein composed of two identical 118 amino acid peptide chains linked by a single disulfide bond. Transforming growth factor-β is a family of five related cytokines that have been shown on a wide variety of normal and neoplastic cells, indicating the importance of these homo-dimmer proteins as multi-functional regulators of cellular activity. The three mammalian isoforms of TGF-β (TGF-β1, TGF-β2 and TGF-β3) signal through the same receptor and elicit similar biological responses.They are involved in physiological processes as embryogenesis, tissue remodelling and wound healing.